diff --git a/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguage.php b/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguage.php
index 524342ef6c..f9012b73a8 100644
--- a/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguage.php
+++ b/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguage.php
@@ -31,21 +31,21 @@ class ExpressionLanguage extends BaseExpressionLanguage
         });
 
         $this->register('is_authenticated', function () {
-            return '!$trust_resolver->isAnonymous($token)';
+            return '$token && !$trust_resolver->isAnonymous($token)';
         }, function (array $variables) {
-            return !$variables['trust_resolver']->isAnonymous($variables['token']);
+            return $variables['token'] && !$variables['trust_resolver']->isAnonymous($variables['token']);
         });
 
         $this->register('is_fully_authenticated', function () {
-            return '!$trust_resolver->isFullFledge($token)';
+            return '$trust_resolver->isFullFledged($token)';
         }, function (array $variables) {
-            return !$variables['trust_resolver']->isFullFledge($variables['token']);
+            return $variables['trust_resolver']->isFullFledged($variables['token']);
         });
 
         $this->register('is_remember_me', function () {
-            return '!$trust_resolver->isRememberMe($token)';
+            return '$trust_resolver->isRememberMe($token)';
         }, function (array $variables) {
-            return !$variables['trust_resolver']->isRememberMe($variables['token']);
+            return $variables['trust_resolver']->isRememberMe($variables['token']);
         });
 
         $this->register('has_role', function ($role) {
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/ExpressionLanguageTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/ExpressionLanguageTest.php
new file mode 100644
index 0000000000..c223684d81
--- /dev/null
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/ExpressionLanguageTest.php
@@ -0,0 +1,79 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Security\Core\Tests\Authorization;
+
+use Symfony\Component\Security\Core\Authorization\ExpressionLanguage;
+use Symfony\Component\Security\Core\Authentication\AuthenticationTrustResolver;
+use Symfony\Component\Security\Core\Authentication\Token\AnonymousToken;
+use Symfony\Component\Security\Core\Authentication\Token\RememberMeToken;
+use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;
+use Symfony\Component\Security\Core\User\User;
+
+class ExpressionLanguageTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @dataProvider provider
+     */
+    public function testIsAuthenticated($token, $expression, $result, array $roles = array())
+    {
+        $anonymousTokenClass = 'Symfony\\Component\\Security\\Core\\Authentication\\Token\\AnonymousToken';
+        $rememberMeTokenClass = 'Symfony\\Component\\Security\\Core\\Authentication\\Token\\RememberMeToken';
+        $expressionLanguage = new ExpressionLanguage();
+        $trustResolver = new AuthenticationTrustResolver($anonymousTokenClass, $rememberMeTokenClass);
+
+        $context = array();
+        $context['trust_resolver'] = $trustResolver;
+        $context['token'] = $token;
+        $context['roles'] = $roles;
+
+        $this->assertEquals($result, $expressionLanguage->evaluate($expression, $context));
+    }
+
+    public function provider()
+    {
+        $roles = array('ROLE_USER', 'ROLE_ADMIN');
+        $user = new User('username', 'password', $roles);
+
+        $noToken = null;
+        $anonymousToken = new AnonymousToken('firewall', 'anon.');
+        $rememberMeToken = new RememberMeToken($user, 'providerkey', 'firewall');
+        $usernamePasswordToken = new UsernamePasswordToken('username', 'password', 'providerkey', $roles);
+
+        return array(
+            array($noToken, 'is_anonymous()', false),
+            array($noToken, 'is_authenticated()', false),
+            array($noToken, 'is_fully_authenticated()', false),
+            array($noToken, 'is_remember_me()', false),
+            array($noToken, "has_role('ROLE_USER')", false),
+
+            array($anonymousToken, 'is_anonymous()', true),
+            array($anonymousToken, 'is_authenticated()', false),
+            array($anonymousToken, 'is_fully_authenticated()', false),
+            array($anonymousToken, 'is_remember_me()', false),
+            array($anonymousToken, "has_role('ROLE_USER')", false),
+
+            array($rememberMeToken, 'is_anonymous()', false),
+            array($rememberMeToken, 'is_authenticated()', true),
+            array($rememberMeToken, 'is_fully_authenticated()', false),
+            array($rememberMeToken, 'is_remember_me()', true),
+            array($rememberMeToken, "has_role('ROLE_FOO')", false, $roles),
+            array($rememberMeToken, "has_role('ROLE_USER')", true, $roles),
+
+            array($usernamePasswordToken, 'is_anonymous()', false),
+            array($usernamePasswordToken, 'is_authenticated()', true),
+            array($usernamePasswordToken, 'is_fully_authenticated()', true),
+            array($usernamePasswordToken, 'is_remember_me()', false),
+            array($usernamePasswordToken, "has_role('ROLE_FOO')", false, $roles),
+            array($usernamePasswordToken, "has_role('ROLE_USER')", true, $roles),
+        );
+    }
+}